build(deps): bump the gh-actions group with 1 update

Bumps the gh-actions group with 1 update: [sigstore/cosign-installer](https://github.com/sigstore/cosign-installer).


Updates `sigstore/cosign-installer` from 3.3.0 to 3.4.0
- [Release notes](https://github.com/sigstore/cosign-installer/releases)
- [Commits](sigstore/cosign-installer@9614fae...e1523de)

---
updated-dependencies:
- dependency-name: sigstore/cosign-installer
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gh-actions
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/main.yml

@@ -48,7 +48,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # ratchet:actions/checkout@v4
       - name: Install cosign
-        uses: sigstore/cosign-installer@9614fae9e5c5eddabb09f90a270fcb487c9f7149 # ratchet:sigstore/cosign-installer@main
+        uses: sigstore/cosign-installer@e1523de7571e31dbe865fd2e80c5c7c23ae71eb4 # ratchet:sigstore/cosign-installer@main
         with:
           cosign-release: 'v2.1.1'
       - name: Verify runner image